Elastic laser spans the spectrum
Fibre optics could benefit from a stretchy laser that changes colour
Read article: Elastic laser spans the spectrum
Read article: Elastic laser spans the spectrum
Laser jocks reach the big time
Optoelectronics is flourishing in Scotland with new firms spinning off from local universities every month. Valerie Jamieson finds out why it is boom time for the region
Read article: Laser jocks reach the big time
Success for Irish physicist
John Hegarty outlines his plans for physics at Trinity
Beating the femtosecond limit
Ultrashort laser pulses could probe processes that occur almost instantaneously
Heat leaves atom clusters cold
Clumps of sodium atoms buck the thermodynamic trend
Silicon lasers start to take shape
Devices made from silicon dominate the microelectronics industry, so silicon should be the material of choice for anyone designing new electronic devices that will be integrated with microelectronic c...
Read article: Silicon lasers start to take shape
First light on silicon laser
The internal energy levels of bulk silicon – in particular its ‘indirect bandgap’ – makes it emit light very inefficiently. Existing lasers are therefore based on ‘direct...
Nobel prize goes to semiconductor pioneers
Kroemer and Alferov share the prize for their work on semiconductor heterostructures – devices that contain thin layers of different semiconductors, usually based on gallium arsenide, stacked on...
Laser smashes light-speed record
Special relativity prevents any object with mass travelling at the speed of light, and the principle of causality – the notion that the cause comes before the effect – is used to rule out ...
Microscopy: two lasers are better than one
Stefan Hell and co-workers at Gottingen have adapted a technique known as fluorescence microscopy. In this form of microscopy the specimen is irradiated at a wavelength which excites either natural or...
